1. Introduction
This manual provides essential information for the proper use, setup, operation, and maintenance of your SCUBAPRO MK2 Plus 1st Stage DIN Regulator. The MK2 Plus is a robust and reliable first stage designed for recreational diving, featuring a classic downstream piston and a durable chromed brass body. Please read this manual thoroughly before using the equipment to ensure safe and optimal performance.
Figure 1: SCUBAPRO MK2 Plus 1st Stage DIN Regulator. This image shows the main body of the regulator with its various ports and the DIN connection.
2. Safety Information
Diving with compressed air is an activity that carries inherent risks. Improper use or maintenance of diving equipment can lead to serious injury or death. Adhere to the following safety guidelines:
- Professional Training: Only use this equipment after receiving proper training and certification from a recognized diving organization.
- Pre-Dive Checks: Always perform thorough pre-dive equipment checks as outlined in your diving training.
- Regular Maintenance: Ensure your regulator is serviced by an authorized SCUBAPRO technician at recommended intervals.
- Never Modify: Do not attempt to modify or repair the regulator yourself. This can compromise its safety and performance.
- Cleanliness: Keep all connections clean and free from debris, sand, or salt crystals.
- Air Quality: Only use clean, dry, filtered compressed air from a reputable source.
3. Setup
Follow these steps to correctly set up your SCUBAPRO MK2 Plus 1st Stage DIN Regulator:
- Inspect: Before each use, visually inspect the 1st stage for any signs of damage, corrosion, or wear. Check the O-ring on the DIN connector for cracks or deformities. Replace if necessary.
- Connect to Cylinder: Ensure the cylinder valve is clean and free of debris. Screw the DIN connector of the 1st stage directly into the cylinder valve until it is hand-tight. Do not overtighten.
- Attach Hoses: Connect your low-pressure hoses (e.g., for 2nd stage regulator, BCD inflator, drysuit inflator) to the four low-pressure ports. Connect your high-pressure hose (for pressure gauge/console) to the single high-pressure port. Ensure all connections are secure.
- Open Cylinder Valve: Slowly open the cylinder valve counter-clockwise, listening for any leaks. Observe your pressure gauge to ensure it registers the cylinder pressure smoothly.
- Check for Leaks: With the cylinder valve fully open, listen and feel for any air leaks around the connections. If a leak is detected, close the cylinder valve, depressurize the system, and re-check connections. Do not dive with a leaking regulator.
4. Operating
The SCUBAPRO MK2 Plus 1st Stage Regulator is designed for straightforward operation once properly set up. Its primary function is to reduce the high pressure from the scuba cylinder to an intermediate pressure, which is then supplied to your second stage regulator(s) and other low-pressure devices.
- Air Delivery: Once the cylinder valve is open, the 1st stage automatically delivers air at a consistent intermediate pressure to all connected devices.
- Pressure Monitoring: Regularly monitor your cylinder pressure via the high-pressure gauge connected to the 1st stage.
- Emergency Procedures: Familiarize yourself with emergency procedures for air sharing and regulator free-flow as part of your dive training.
5. Maintenance
Proper maintenance is crucial for the longevity and safe operation of your regulator. Always follow these guidelines:
- Rinse After Use: After each dive, with the 1st stage still attached to the cylinder and pressurized, rinse the entire regulator assembly thoroughly with fresh, clean water. Do not press the purge button on the 2nd stage while rinsing the 1st stage unless it is pressurized, as this can allow water to enter the 1st stage.
- Dry Thoroughly: Allow the regulator to air dry completely in a shaded, well-ventilated area. Avoid direct sunlight.
- Storage: Store your regulator in a clean, dry place, away from direct sunlight, extreme temperatures, and chemicals. It is recommended to store it in a regulator bag.
- Professional Service: Your SCUBAPRO MK2 Plus regulator requires periodic professional servicing by an authorized SCUBAPRO technician. Refer to your SCUBAPRO dealer for recommended service intervals, typically annually or after a certain number of dives, whichever comes first.
- O-Ring Inspection: Regularly inspect the DIN O-ring for any signs of wear, cuts, or flattening. Replace it immediately if any damage is observed.
6. Troubleshooting
If you encounter issues with your regulator, perform these basic checks. For any persistent or serious problems, always consult an authorized SCUBAPRO service technician.
| Problem | Possible Cause | Solution |
|---|---|---|
| Air Leak at Cylinder Connection | Damaged or missing DIN O-ring; loose connection; debris on O-ring or valve seat. | Close cylinder valve, depressurize, inspect/replace O-ring, clean connection, re-tighten. |
| Regulator Free-Flows | Contamination (sand, salt); impact damage; improper adjustment; worn internal parts. | Rinse thoroughly. If persistent, seek professional service immediately. |
| Hard Breathing / Restricted Air Flow | Clogged filter; worn internal parts; improper adjustment; low cylinder pressure. | Check cylinder pressure. If problem persists, professional service is required. |
| Pressure Gauge Malfunction | Damaged gauge; kinked hose; air blockage. | Inspect hose for kinks. If gauge is faulty, replace the gauge or console. |
Important: Never attempt to disassemble or repair the 1st stage regulator yourself. This requires specialized tools and training.
7. Specifications
The following are the technical specifications for the SCUBAPRO MK2 Plus 1st Stage DIN Regulator (Model: 10.063.300):
- Regulator Type: Classic downstream piston
- Body Material: Chromed brass
- Low-Pressure Ports: 4
- High-Pressure Ports: 1
- Tank Connection: DIN 300 bar
- Weight: 485 grams (approximately 1.07 lbs)
- Air Flow at 200 bar: 2600 l/min (92 SCFM)
- Intermediate Pressure: 8.5 - 9.8 bar (123 - 142 psi)
- Dimensions (L x W x H): 12.7 x 15.5 x 7.6 cm (5 x 6.1 x 3 inches)
- Manufacturer Part Number: 10.063.300
8. Warranty and Support
For detailed information regarding the warranty terms and conditions for your SCUBAPRO MK2 Plus 1st Stage DIN Regulator, please refer to the official SCUBAPRO website or contact your authorized SCUBAPRO dealer. Warranty coverage typically requires proof of purchase and adherence to recommended service schedules.
For technical support, service inquiries, or to locate an authorized service center, please visit the official SCUBAPRO website or contact their customer service department directly. Always ensure that any service or repairs are performed by certified SCUBAPRO technicians using genuine SCUBAPRO parts.